If the question is about span, frame tolerance, joint prep, panel thickness, or what goes into a submittal — this is where to look before asking us directly.
Resources from PG Acrylic — manufacturer and supplier of structural cast acrylic (PMMA) viewing panels, 20–600 mm, for pool, aquarium, underwater-tunnel and oceanarium projects.
Most acrylic pool viewing window decisions depend on visible span, boundary conditions, support assumptions, and deflection limits — not water depth alone.
Use this note when acrylic pool wall thickness cannot be confirmed from water depth alone.
If drawings, water depth, visible opening, or support details are already available, move directly into project-specific technical evaluation.
Submit project requirements →Each application type involves different structural loading, panel geometry, interface conditions, and review evidence. Use the note that matches your project to understand what parameters must be confirmed before fabrication can begin. The five application pages — pool, aquarium, tunnel, oceanarium and thick PMMA — carry the supplier scope, capability and project proof for that application; the comparison notes support the material decision.
Panel thickness, visible span, boundary conditions, and interface detail for luxury residential and hotel pool wall installations.
Flat windows for public and commercial aquarium tanks. Covers tank depth, span, frame interface, and seal design.
Curved PMMA panels for walk-through aquarium tunnels. Covers geometry, segment joints, installation sequence, and structural interface.
Ultra-large PMMA panels for full-scale public oceanarium tanks. Covers bonded construction, structural calculations, and review evidence.
Cast PMMA viewing panels 20–600mm. Covers manufacturing capability and how span, depth, boundary conditions, safety factor, and casting constraints set the thickness.
Custom artificial coral, reef structures and marine theming for aquarium, oceanarium and marine attraction projects. Colour-stable, fish-safe.
Why structural viewing panels use cast (cell-cast) PMMA, not extruded — molecular weight, crazing resistance, optical clarity, and bondability through thick sections.
Why large aquariums, oceanariums, pools and tunnels use cast acrylic over glass — weight, impact resistance, optical clarity at thickness, and curved or seamless forms.
If drawings, water depth, opening size, and support conditions are already available, move directly into project-specific technical evaluation.
Submit project requirements →Buyer-side review resources built around completed projects — what to evaluate, coordinate, and ask before fabrication begins.
A completed walk-through underwater tunnel in curved cast-PMMA segments. PG Acrylic supplied the acrylic tunnel panels.
Read the project reference →The three inputs that allow a useful first review to begin: acrylic dimension, water depth, and drawings if available.
Read review requirements →Why water depth matters, why it does not set acrylic thickness alone, and which project-specific factors complete the review.
Read engineering FAQ →If you already have drawings and dimensions, don't browse — go straight to Submit Requirements. If you're still working out what the issue is or what evidence you need, this page is for that.
Scope gaps, review delays, QC questions, site handling issues — jump to the section that matches the problem.
Jump to problem paths →Evidence packs, installation guides, and FAQ — for when you need to understand something before the project moves forward.
View support materials →Evidence packs, installation guides, and common questions — for when you need to understand an interface condition, check a delivery detail, or confirm what QC records look like before asking us directly.
Interface drawings, dimensional references, installation stage photos, and QC record samples — for when a reviewer needs to understand the condition before the project can move forward.
Open Evidence Packs → SGS · TÜV · Bureau Veritas · ASTM test reports →
How panels get lifted, how silicone interfaces are prepared, how frame tolerance affects the seal — practical steps that get skipped on site when nobody flagged them as required.
Open Guides →Questions we get on every project: what goes into a submittal, where scope ends, what QC records look like, what to check when panels arrive on site.
Open FAQ →The most common cause of rework on viewing panel projects. Panels get fabricated before anyone confirmed who supplies the frame, who applies the silicone, and what the channel tolerance needs to be.
Panels arrive on site and the frame isn't ready. Silicone spec wasn't in the contract. The channel was cast to the wrong tolerance. All of these should have been in the scope matrix before fabrication.
Scope matrix, inclusions and exclusions, interface notes, and role-specific assumptions.
Whether responsibilities are clearly divided before fabrication, delivery coordination, and handover begin.
If the same comment keeps coming back in every review round, the submission is missing something structural — not just a detail.
A drawing without a revision index. A thickness specified without confirming the span. An interface note that contradicts the structural drawing. These are the things that make review rounds repeat.
Drawing index, review checklist, assumptions log, and revision-linked review materials.
Whether the submission is structured clearly enough for technical comments, approvals, and controlled follow-up.
If the reviewer asks for a QC record and you're not sure what format it should be in, or whether it should cover the raw material or the finished panel — this section covers that.
A panel ID that doesn't match the packing list. A QC record with no batch reference. A handover document that doesn't match what was actually shipped.
QC fields, traceability structure, panel ID mapping, and handover-oriented documentation logic.
Whether quality and traceability records are clear enough for sign-off, audit, and handover expectations.
Panels that survive fabrication and shipping can still be damaged in the first hour on site. Most site receipt damage is preventable.
Film removed too early. Forklift tines against the panel edge. No storage plan for a 400mm thick panel in a half-finished building. These are the things that happen when nobody prepared the site team.
Packaging specification, handling guidance, receiving checklist, and panel identification references.
Whether transport, site receipt, storage, and installation-side handling are aligned before delivery reaches site.
Three different questions, three different pages. They're not the same thing.
Go to Installed Projects — compare interface condition, panel geometry, installation stage, and installed result.
Stay here — use the evidence packs, guides, or FAQ below to understand the condition before the project moves forward.
Go to Submit Requirements — send the inputs and we'll tell you what the thickness should be and what's missing.
Typical review inputs include drawings, scope notes, checklists, interface information, QC records, handling guidance, and handover document structure, depending on the project stage and review question.
Use Installed Projects & Updates when the team needs to compare similar interface, geometry, stage, or delivery conditions. Use Resources when the issue is already clear and the team needs document structure or review evidence.
Before submitting project inputs, prepare the drawings, dimensions, water depth notes, support details, marked-up sketches, review comments, or packing and receiving constraints that affect the technical decision.
A project is ready for technical intake when the issue affects a real approval, pricing, fabrication, handover, delivery, or site coordination decision and the team can share project-specific inputs.
Use the engineering note when thickness, deflection, or interface decisions depend on visible span, water depth, boundary conditions, and support assumptions rather than water depth alone.
Yes, if the team is still estimating thickness from water depth only. Use the note first to check visible span, support condition, boundary assumptions, deflection limits, and interface details.